lustre/lov/lov_request.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #ifndef EXPORT_SYMTAB
  38 # define EXPORT_SYMTAB
  39 #endif
  40 #define DEBUG_SUBSYSTEM S_LOV
  41
  42 #ifdef __KERNEL__
  43 #include <libcfs/libcfs.h>
  44 #else
  45 #include <liblustre.h>
  46 #endif
  47
  48 #include <obd_class.h>
  49 #include <obd_lov.h>
  50 #include <lustre/lustre_idl.h>
  51
  52 #include "lov_internal.h"
  53
  54 static void lov_init_set(struct lov_request_set *set)
  55 {
  56         set->set_count = 0;
  57         set->set_completes = 0;
  58         set->set_success = 0;
  59         set->set_cookies = 0;
  60         CFS_INIT_LIST_HEAD(&set->set_list);
  61         cfs_atomic_set(&set->set_refcount, 1);
  62         cfs_waitq_init(&set->set_waitq);
  63         cfs_spin_lock_init(&set->set_lock);
  64 }
  65
  66 void lov_finish_set(struct lov_request_set *set)
  67 {
  68         cfs_list_t *pos, *n;
  69         ENTRY;
  70
  71         LASSERT(set);
  72         cfs_list_for_each_safe(pos, n, &set->set_list) {
  73                 struct lov_request *req = cfs_list_entry(pos,
  74                                                          struct lov_request,
  75                                                          rq_link);
  76                 cfs_list_del_init(&req->rq_link);
  77
  78                 if (req->rq_oi.oi_oa)
  79                         OBDO_FREE(req->rq_oi.oi_oa);
  80                 if (req->rq_oi.oi_md)
  81                         OBD_FREE(req->rq_oi.oi_md, req->rq_buflen);
  82                 if (req->rq_oi.oi_osfs)
  83                         OBD_FREE(req->rq_oi.oi_osfs,
  84                                  sizeof(*req->rq_oi.oi_osfs));
  85                 OBD_FREE(req, sizeof(*req));
  86         }
  87
  88         if (set->set_pga) {
  89                 int len = set->set_oabufs * sizeof(*set->set_pga);
  90                 OBD_FREE(set->set_pga, len);
  91         }
  92         if (set->set_lockh)
  93                 lov_llh_put(set->set_lockh);
  94
  95         OBD_FREE(set, sizeof(*set));
  96         EXIT;
  97 }
  98
  99 int lov_finished_set(struct lov_request_set *set)
 100 {
 101         CDEBUG(D_INFO, "check set %d/%d\n", set->set_completes,
 102                set->set_count);
 103         return set->set_completes == set->set_count;
 104 }
 105
 106 void lov_update_set(struct lov_request_set *set,
 107                     struct lov_request *req, int rc)
 108 {
 109         req->rq_complete = 1;
 110         req->rq_rc = rc;
 111
 112         set->set_completes++;
 113         if (rc == 0)
 114                 set->set_success++;
 115
 116         cfs_waitq_signal(&set->set_waitq);
 117 }
 118
 119 int lov_update_common_set(struct lov_request_set *set,
 120                           struct lov_request *req, int rc)
 121 {
 122         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 123         ENTRY;
 124
 125         lov_update_set(set, req, rc);
 126
 127         /* grace error on inactive ost */
 128         if (rc && !(lov->lov_tgts[req->rq_idx] &&
 129                     lov->lov_tgts[req->rq_idx]->ltd_active))
 130                 rc = 0;
 131
 132         /* FIXME in raid1 regime, should return 0 */
 133         RETURN(rc);
 134 }
 135
 136 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set)
 137 {
 138         cfs_list_add_tail(&req->rq_link, &set->set_list);
 139         set->set_count++;
 140         req->rq_rqset = set;
 141 }
 142
 143 extern void osc_update_enqueue(struct lustre_handle *lov_lockhp,
 144                                struct lov_oinfo *loi, int flags,
 145                                struct ost_lvb *lvb, __u32 mode, int rc);
 146
 147 static int lov_update_enqueue_lov(struct obd_export *exp,
 148                                   struct lustre_handle *lov_lockhp,
 149                                   struct lov_oinfo *loi, int flags, int idx,
 150                                   __u64 oid, int rc)
 151 {
 152         struct lov_obd *lov = &exp->exp_obd->u.lov;
 153
 154         if (rc != ELDLM_OK &&
 155             !(rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT))) {
 156                 memset(lov_lockhp, 0, sizeof(*lov_lockhp));
 157                 if (lov->lov_tgts[idx] && lov->lov_tgts[idx]->ltd_active) {
 158                         /* -EUSERS used by OST to report file contention */
 159                         if (rc != -EINTR && rc != -EUSERS)
 160                                 CERROR("enqueue objid "LPX64" subobj "
 161                                        LPX64" on OST idx %d: rc %d\n",
 162                                        oid, loi->loi_id, loi->loi_ost_idx, rc);
 163                 } else
 164                         rc = ELDLM_OK;
 165         }
 166         return rc;
 167 }
 168
 169 int lov_update_enqueue_set(struct lov_request *req, __u32 mode, int rc)
 170 {
 171         struct lov_request_set *set = req->rq_rqset;
 172         struct lustre_handle *lov_lockhp;
 173         struct obd_info *oi = set->set_oi;
 174         struct lov_oinfo *loi;
 175         ENTRY;
 176
 177         LASSERT(oi != NULL);
 178
 179         lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 180         loi = oi->oi_md->lsm_oinfo[req->rq_stripe];
 181
 182         /* XXX LOV STACKING: OSC gets a copy, created in lov_prep_enqueue_set
 183          * and that copy can be arbitrarily out of date.
 184          *
 185          * The LOV API is due for a serious rewriting anyways, and this
 186          * can be addressed then. */
 187
 188         lov_stripe_lock(oi->oi_md);
 189         osc_update_enqueue(lov_lockhp, loi, oi->oi_flags,
 190                            &req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb, mode, rc);
 191         if (rc == ELDLM_LOCK_ABORTED && (oi->oi_flags & LDLM_FL_HAS_INTENT))
 192                 memset(lov_lockhp, 0, sizeof *lov_lockhp);
 193         rc = lov_update_enqueue_lov(set->set_exp, lov_lockhp, loi, oi->oi_flags,
 194                                     req->rq_idx, oi->oi_md->lsm_object_id, rc);
 195         lov_stripe_unlock(oi->oi_md);
 196         lov_update_set(set, req, rc);
 197         RETURN(rc);
 198 }
 199
 200 /* The callback for osc_enqueue that updates lov info for every OSC request. */
 201 static int cb_update_enqueue(void *cookie, int rc)
 202 {
 203         struct obd_info *oinfo = cookie;
 204         struct ldlm_enqueue_info *einfo;
 205         struct lov_request *lovreq;
 206
 207         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 208         einfo = lovreq->rq_rqset->set_ei;
 209         return lov_update_enqueue_set(lovreq, einfo->ei_mode, rc);
 210 }
 211
 212 static int enqueue_done(struct lov_request_set *set, __u32 mode)
 213 {
 214         struct lov_request *req;
 215         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 216         int rc = 0;
 217         ENTRY;
 218
 219         /* enqueue/match success, just return */
 220         if (set->set_completes && set->set_completes == set->set_success)
 221                 RETURN(0);
 222
 223         /* cancel enqueued/matched locks */
 224         cfs_list_for_each_entry(req, &set->set_list, rq_link) {
 225                 struct lustre_handle *lov_lockhp;
 226
 227                 if (!req->rq_complete || req->rq_rc)
 228                         continue;
 229
 230                 lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 231                 LASSERT(lov_lockhp);
 232                 if (!lustre_handle_is_used(lov_lockhp))
 233                         continue;
 234
 235                 rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp,
 236                                 req->rq_oi.oi_md, mode, lov_lockhp);
 237                 if (rc && lov->lov_tgts[req->rq_idx] &&
 238                     lov->lov_tgts[req->rq_idx]->ltd_active)
 239                         CERROR("cancelling obdjid "LPX64" on OST "
 240                                "idx %d error: rc = %d\n",
 241                                req->rq_oi.oi_md->lsm_object_id,
 242                                req->rq_idx, rc);
 243         }
 244         if (set->set_lockh)
 245                 lov_llh_put(set->set_lockh);
 246         RETURN(rc);
 247 }
 248
 249 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
 250                          struct ptlrpc_request_set *rqset)
 251 {
 252         int ret = 0;
 253         ENTRY;
 254
 255         if (set == NULL)
 256                 RETURN(0);
 257         LASSERT(set->set_exp);
 258         /* Do enqueue_done only for sync requests and if any request
 259          * succeeded. */
 260         if (!rqset) {
 261                 if (rc)
 262                         set->set_completes = 0;
 263                 ret = enqueue_done(set, mode);
 264         } else if (set->set_lockh)
 265                 lov_llh_put(set->set_lockh);
 266
 267         lov_put_reqset(set);
 268
 269         RETURN(rc ? rc : ret);
 270 }
 271
 272 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
 273                          struct ldlm_enqueue_info *einfo,
 274                          struct lov_request_set **reqset)
 275 {
 276         struct lov_obd *lov = &exp->exp_obd->u.lov;
 277         struct lov_request_set *set;
 278         int i, rc = 0;
 279         ENTRY;
 280
 281         OBD_ALLOC(set, sizeof(*set));
 282         if (set == NULL)
 283                 RETURN(-ENOMEM);
 284         lov_init_set(set);
 285
 286         set->set_exp = exp;
 287         set->set_oi = oinfo;
 288         set->set_ei = einfo;
 289         set->set_lockh = lov_llh_new(oinfo->oi_md);
 290         if (set->set_lockh == NULL)
 291                 GOTO(out_set, rc = -ENOMEM);
 292         oinfo->oi_lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 293
 294         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
 295                 struct lov_oinfo *loi;
 296                 struct lov_request *req;
 297                 obd_off start, end;
 298
 299                 loi = oinfo->oi_md->lsm_oinfo[i];
 300                 if (!lov_stripe_intersects(oinfo->oi_md, i,
 301                                            oinfo->oi_policy.l_extent.start,
 302                                            oinfo->oi_policy.l_extent.end,
 303                                            &start, &end))
 304                         continue;
 305
 306                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 307                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 308                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 309                         continue;
 310                 }
 311
 312                 OBD_ALLOC(req, sizeof(*req));
 313                 if (req == NULL)
 314                         GOTO(out_set, rc = -ENOMEM);
 315
 316                 req->rq_buflen = sizeof(*req->rq_oi.oi_md) +
 317                         sizeof(struct lov_oinfo *) +
 318                         sizeof(struct lov_oinfo);
 319                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 320                 if (req->rq_oi.oi_md == NULL) {
 321                         OBD_FREE(req, sizeof(*req));
 322                         GOTO(out_set, rc = -ENOMEM);
 323                 }
 324                 req->rq_oi.oi_md->lsm_oinfo[0] =
 325                         ((void *)req->rq_oi.oi_md) + sizeof(*req->rq_oi.oi_md) +
 326                         sizeof(struct lov_oinfo *);
 327
 328                 /* Set lov request specific parameters. */
 329                 req->rq_oi.oi_lockh = set->set_lockh->llh_handles + i;
 330                 req->rq_oi.oi_cb_up = cb_update_enqueue;
 331                 req->rq_oi.oi_flags = oinfo->oi_flags;
 332
 333                 LASSERT(req->rq_oi.oi_lockh);
 334
 335                 req->rq_oi.oi_policy.l_extent.gid =
 336                         oinfo->oi_policy.l_extent.gid;
 337                 req->rq_oi.oi_policy.l_extent.start = start;
 338                 req->rq_oi.oi_policy.l_extent.end = end;
 339
 340                 req->rq_idx = loi->loi_ost_idx;
 341                 req->rq_stripe = i;
 342
 343                 /* XXX LOV STACKING: submd should be from the subobj */
 344                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 345                 req->rq_oi.oi_md->lsm_object_seq = loi->loi_seq;
 346                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 347                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms_valid =
 348                         loi->loi_kms_valid;
 349                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms = loi->loi_kms;
 350                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb = loi->loi_lvb;
 351
 352                 lov_set_add_req(req, set);
 353         }
 354         if (!set->set_count)
 355                 GOTO(out_set, rc = -EIO);
 356         *reqset = set;
 357         RETURN(0);
 358 out_set:
 359         lov_fini_enqueue_set(set, einfo->ei_mode, rc, NULL);
 360         RETURN(rc);
 361 }
 362
 363 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
 364                          int rc)
 365 {
 366         int ret = rc;
 367         ENTRY;
 368
 369         if (rc > 0)
 370                 ret = 0;
 371         else if (rc == 0)
 372                 ret = 1;
 373         lov_update_set(set, req, ret);
 374         RETURN(rc);
 375 }
 376
 377 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags)
 378 {
 379         int rc = 0;
 380         ENTRY;
 381
 382         if (set == NULL)
 383                 RETURN(0);
 384         LASSERT(set->set_exp);
 385         rc = enqueue_done(set, mode);
 386         if ((set->set_count == set->set_success) &&
 387             (flags & LDLM_FL_TEST_LOCK))
 388                 lov_llh_put(set->set_lockh);
 389
 390         lov_put_reqset(set);
 391
 392         RETURN(rc);
 393 }
 394
 395 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
 396                        struct lov_stripe_md *lsm, ldlm_policy_data_t *policy,
 397                        __u32 mode, struct lustre_handle *lockh,
 398                        struct lov_request_set **reqset)
 399 {
 400         struct lov_obd *lov = &exp->exp_obd->u.lov;
 401         struct lov_request_set *set;
 402         int i, rc = 0;
 403         ENTRY;
 404
 405         OBD_ALLOC(set, sizeof(*set));
 406         if (set == NULL)
 407                 RETURN(-ENOMEM);
 408         lov_init_set(set);
 409
 410         set->set_exp = exp;
 411         set->set_oi = oinfo;
 412         set->set_oi->oi_md = lsm;
 413         set->set_lockh = lov_llh_new(lsm);
 414         if (set->set_lockh == NULL)
 415                 GOTO(out_set, rc = -ENOMEM);
 416         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 417
 418         for (i = 0; i < lsm->lsm_stripe_count; i++){
 419                 struct lov_oinfo *loi;
 420                 struct lov_request *req;
 421                 obd_off start, end;
 422
 423                 loi = lsm->lsm_oinfo[i];
 424                 if (!lov_stripe_intersects(lsm, i, policy->l_extent.start,
 425                                            policy->l_extent.end, &start, &end))
 426                         continue;
 427
 428                 /* FIXME raid1 should grace this error */
 429                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 430                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 431                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 432                         GOTO(out_set, rc = -EIO);
 433                 }
 434
 435                 OBD_ALLOC(req, sizeof(*req));
 436                 if (req == NULL)
 437                         GOTO(out_set, rc = -ENOMEM);
 438
 439                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 440                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 441                 if (req->rq_oi.oi_md == NULL) {
 442                         OBD_FREE(req, sizeof(*req));
 443                         GOTO(out_set, rc = -ENOMEM);
 444                 }
 445
 446                 req->rq_oi.oi_policy.l_extent.start = start;
 447                 req->rq_oi.oi_policy.l_extent.end = end;
 448                 req->rq_oi.oi_policy.l_extent.gid = policy->l_extent.gid;
 449
 450                 req->rq_idx = loi->loi_ost_idx;
 451                 req->rq_stripe = i;
 452
 453                 /* XXX LOV STACKING: submd should be from the subobj */
 454                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 455                 req->rq_oi.oi_md->lsm_object_seq = loi->loi_seq;
 456                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 457
 458                 lov_set_add_req(req, set);
 459         }
 460         if (!set->set_count)
 461                 GOTO(out_set, rc = -EIO);
 462         *reqset = set;
 463         RETURN(rc);
 464 out_set:
 465         lov_fini_match_set(set, mode, 0);
 466         RETURN(rc);
 467 }
 468
 469 int lov_fini_cancel_set(struct lov_request_set *set)
 470 {
 471         int rc = 0;
 472         ENTRY;
 473
 474         if (set == NULL)
 475                 RETURN(0);
 476
 477         LASSERT(set->set_exp);
 478         if (set->set_lockh)
 479                 lov_llh_put(set->set_lockh);
 480
 481         lov_put_reqset(set);
 482
 483         RETURN(rc);
 484 }
 485
 486 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
 487                         struct lov_stripe_md *lsm, __u32 mode,
 488                         struct lustre_handle *lockh,
 489                         struct lov_request_set **reqset)
 490 {
 491         struct lov_request_set *set;
 492         int i, rc = 0;
 493         ENTRY;
 494
 495         OBD_ALLOC(set, sizeof(*set));
 496         if (set == NULL)
 497                 RETURN(-ENOMEM);
 498         lov_init_set(set);
 499
 500         set->set_exp = exp;
 501         set->set_oi = oinfo;
 502         set->set_oi->oi_md = lsm;
 503         set->set_lockh = lov_handle2llh(lockh);
 504         if (set->set_lockh == NULL) {
 505                 CERROR("LOV: invalid lov lock handle %p\n", lockh);
 506                 GOTO(out_set, rc = -EINVAL);
 507         }
 508         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 509
 510         for (i = 0; i < lsm->lsm_stripe_count; i++){
 511                 struct lov_request *req;
 512                 struct lustre_handle *lov_lockhp;
 513                 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
 514
 515                 lov_lockhp = set->set_lockh->llh_handles + i;
 516                 if (!lustre_handle_is_used(lov_lockhp)) {
 517                         CDEBUG(D_INFO, "lov idx %d subobj "LPX64" no lock\n",
 518                                loi->loi_ost_idx, loi->loi_id);
 519                         continue;
 520                 }
 521
 522                 OBD_ALLOC(req, sizeof(*req));
 523                 if (req == NULL)
 524                         GOTO(out_set, rc = -ENOMEM);
 525
 526                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 527                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 528                 if (req->rq_oi.oi_md == NULL) {
 529                         OBD_FREE(req, sizeof(*req));
 530                         GOTO(out_set, rc = -ENOMEM);
 531                 }
 532
 533                 req->rq_idx = loi->loi_ost_idx;
 534                 req->rq_stripe = i;
 535
 536                 /* XXX LOV STACKING: submd should be from the subobj */
 537                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 538                 req->rq_oi.oi_md->lsm_object_seq = loi->loi_seq;
 539                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 540
 541                 lov_set_add_req(req, set);
 542         }
 543         if (!set->set_count)
 544                 GOTO(out_set, rc = -EIO);
 545         *reqset = set;
 546         RETURN(rc);
 547 out_set:
 548         lov_fini_cancel_set(set);
 549         RETURN(rc);
 550 }
 551
 552 static int lov_update_create_set(struct lov_request_set *set,
 553                                  struct lov_request *req, int rc)
 554 {
 555         struct obd_trans_info *oti = set->set_oti;
 556         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 557         struct lov_oinfo *loi;
 558         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 559         ENTRY;
 560
 561         if (rc && lov->lov_tgts[req->rq_idx] &&
 562             lov->lov_tgts[req->rq_idx]->ltd_active) {
 563                 CERROR("error creating fid "LPX64" sub-object"
 564                        " on OST idx %d/%d: rc = %d\n",
 565                        set->set_oi->oi_oa->o_id, req->rq_idx,
 566                        lsm->lsm_stripe_count, rc);
 567                 if (rc > 0) {
 568                         CERROR("obd_create returned invalid err %d\n", rc);
 569                         rc = -EIO;
 570                 }
 571         }
 572
 573         cfs_spin_lock(&set->set_lock);
 574         req->rq_stripe = set->set_success;
 575         loi = lsm->lsm_oinfo[req->rq_stripe];
 576
 577
 578         if (rc) {
 579                 lov_update_set(set, req, rc);
 580                 cfs_spin_unlock(&set->set_lock);
 581                 RETURN(rc);
 582         }
 583
 584         loi->loi_id = req->rq_oi.oi_oa->o_id;
 585         loi->loi_seq = req->rq_oi.oi_oa->o_seq;
 586         loi->loi_ost_idx = req->rq_idx;
 587         loi_init(loi);
 588
 589         if (oti && set->set_cookies)
 590                 ++oti->oti_logcookies;
 591         if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCOOKIE)
 592                 set->set_cookie_sent++;
 593
 594         lov_update_set(set, req, rc);
 595         cfs_spin_unlock(&set->set_lock);
 596
 597         CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64"/"LPU64" at idx %d\n",
 598                lsm->lsm_object_id, loi->loi_id, loi->loi_id, req->rq_idx);
 599         RETURN(rc);
 600 }
 601
 602 static int create_done(struct obd_export *exp, struct lov_request_set *set,
 603                        struct lov_stripe_md **lsmp)
 604 {
 605         struct lov_obd *lov = &exp->exp_obd->u.lov;
 606         struct obd_trans_info *oti = set->set_oti;
 607         struct obdo *src_oa = set->set_oi->oi_oa;
 608         struct lov_request *req;
 609         struct obdo *ret_oa = NULL;
 610         int attrset = 0, rc = 0;
 611         ENTRY;
 612
 613         LASSERT(set->set_completes);
 614
 615         /* try alloc objects on other osts if osc_create fails for
 616          * exceptions: RPC failure, ENOSPC, etc */
 617         if (set->set_count != set->set_success) {
 618                 cfs_list_for_each_entry (req, &set->set_list, rq_link) {
 619                         if (req->rq_rc == 0)
 620                                 continue;
 621
 622                         set->set_completes--;
 623                         req->rq_complete = 0;
 624
 625                         rc = qos_remedy_create(set, req);
 626                         lov_update_create_set(set, req, rc);
 627                 }
 628         }
 629
 630         /* no successful creates */
 631         if (set->set_success == 0)
 632                 GOTO(cleanup, rc);
 633
 634         if (set->set_count != set->set_success) {
 635                 set->set_count = set->set_success;
 636                 qos_shrink_lsm(set);
 637         }
 638
 639         OBDO_ALLOC(ret_oa);
 640         if (ret_oa == NULL)
 641                 GOTO(cleanup, rc = -ENOMEM);
 642
 643         cfs_list_for_each_entry(req, &set->set_list, rq_link) {
 644                 if (!req->rq_complete || req->rq_rc)
 645                         continue;
 646                 lov_merge_attrs(ret_oa, req->rq_oi.oi_oa,
 647                                 req->rq_oi.oi_oa->o_valid, set->set_oi->oi_md,
 648                                 req->rq_stripe, &attrset);
 649         }
 650         if (src_oa->o_valid & OBD_MD_FLSIZE &&
 651             ret_oa->o_size != src_oa->o_size) {
 652                 CERROR("original size "LPU64" isn't new object size "LPU64"\n",
 653                        src_oa->o_size, ret_oa->o_size);
 654                 LBUG();
 655         }
 656         ret_oa->o_id = src_oa->o_id;
 657         ret_oa->o_seq = src_oa->o_seq;
 658         ret_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
 659         memcpy(src_oa, ret_oa, sizeof(*src_oa));
 660         OBDO_FREE(ret_oa);
 661
 662         *lsmp = set->set_oi->oi_md;
 663         GOTO(done, rc = 0);
 664
 665 cleanup:
 666         cfs_list_for_each_entry(req, &set->set_list, rq_link) {
 667                 struct obd_export *sub_exp;
 668                 int err = 0;
 669
 670                 if (!req->rq_complete || req->rq_rc)
 671                         continue;
 672
 673                 sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
 674                 err = obd_destroy(sub_exp, req->rq_oi.oi_oa, NULL, oti, NULL,
 675                                   NULL);
 676                 if (err)
 677                         CERROR("Failed to uncreate objid "LPX64" subobj "
 678                                LPX64" on OST idx %d: rc = %d\n",
 679                                src_oa->o_id, req->rq_oi.oi_oa->o_id,
 680                                req->rq_idx, rc);
 681         }
 682         if (*lsmp == NULL)
 683                 obd_free_memmd(exp, &set->set_oi->oi_md);
 684 done:
 685         if (oti && set->set_cookies) {
 686                 oti->oti_logcookies = set->set_cookies;
 687                 if (!set->set_cookie_sent) {
 688                         oti_free_cookies(oti);
 689                         src_oa->o_valid &= ~OBD_MD_FLCOOKIE;
 690                 } else {
 691                         src_oa->o_valid |= OBD_MD_FLCOOKIE;
 692                 }
 693         }
 694         RETURN(rc);
 695 }
 696
 697 int lov_fini_create_set(struct lov_request_set *set,struct lov_stripe_md **lsmp)
 698 {
 699         int rc = 0;
 700         ENTRY;
 701
 702         if (set == NULL)
 703                 RETURN(0);
 704         LASSERT(set->set_exp);
 705         if (set->set_completes)
 706                 rc = create_done(set->set_exp, set, lsmp);
 707
 708         lov_put_reqset(set);
 709         RETURN(rc);
 710 }
 711
 712 int cb_create_update(void *cookie, int rc)
 713 {
 714         struct obd_info *oinfo = cookie;
 715         struct lov_request *lovreq;
 716
 717         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 718
 719         if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OSC_CREATE_FAIL))
 720                 if (lovreq->rq_idx == obd_fail_val)
 721                         rc = -ENOTCONN;
 722
 723         rc= lov_update_create_set(lovreq->rq_rqset, lovreq, rc);
 724         if (lov_finished_set(lovreq->rq_rqset))
 725                 lov_put_reqset(lovreq->rq_rqset);
 726         return rc;
 727 }
 728
 729 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oinfo,
 730                         struct lov_stripe_md **lsmp, struct obdo *src_oa,
 731                         struct obd_trans_info *oti,
 732                         struct lov_request_set **reqset)
 733 {
 734         struct lov_request_set *set;
 735         int rc = 0;
 736         ENTRY;
 737
 738         OBD_ALLOC(set, sizeof(*set));
 739         if (set == NULL)
 740                 RETURN(-ENOMEM);
 741         lov_init_set(set);
 742
 743         set->set_exp = exp;
 744         set->set_oi = oinfo;
 745         set->set_oi->oi_md = *lsmp;
 746         set->set_oi->oi_oa = src_oa;
 747         set->set_oti = oti;
 748         lov_get_reqset(set);
 749
 750         rc = qos_prep_create(exp, set);
 751         /* qos_shrink_lsm() may have allocated a new lsm */
 752         *lsmp = oinfo->oi_md;
 753         if (rc) {
 754                 lov_fini_create_set(set, lsmp);
 755                 lov_put_reqset(set);
 756         } else {
 757                 *reqset = set;
 758         }
 759         RETURN(rc);
 760 }
 761
 762 static int common_attr_done(struct lov_request_set *set)
 763 {
 764         cfs_list_t *pos;
 765         struct lov_request *req;
 766         struct obdo *tmp_oa;
 767         int rc = 0, attrset = 0;
 768         ENTRY;
 769
 770         LASSERT(set->set_oi != NULL);
 771
 772         if (set->set_oi->oi_oa == NULL)
 773                 RETURN(0);
 774
 775         if (!set->set_success)
 776                 RETURN(-EIO);
 777
 778         OBDO_ALLOC(tmp_oa);
 779         if (tmp_oa == NULL)
 780                 GOTO(out, rc = -ENOMEM);
 781
 782         cfs_list_for_each (pos, &set->set_list) {
 783                 req = cfs_list_entry(pos, struct lov_request, rq_link);
 784
 785                 if (!req->rq_complete || req->rq_rc)
 786                         continue;
 787                 if (req->rq_oi.oi_oa->o_valid == 0)   /* inactive stripe */
 788                         continue;
 789                 lov_merge_attrs(tmp_oa, req->rq_oi.oi_oa,
 790                                 req->rq_oi.oi_oa->o_valid,
 791                                 set->set_oi->oi_md, req->rq_stripe, &attrset);
 792         }
 793         if (!attrset) {
 794                 CERROR("No stripes had valid attrs\n");
 795                 rc = -EIO;
 796         }
 797         if ((set->set_oi->oi_oa->o_valid & OBD_MD_FLEPOCH) &&
 798             (set->set_oi->oi_md->lsm_stripe_count != attrset)) {
 799                 /* When we take attributes of some epoch, we require all the
 800                  * ost to be active. */
 801                 CERROR("Not all the stripes had valid attrs\n");
 802                 GOTO(out, rc = -EIO);
 803         }
 804
 805         tmp_oa->o_id = set->set_oi->oi_oa->o_id;
 806         memcpy(set->set_oi->oi_oa, tmp_oa, sizeof(*set->set_oi->oi_oa));
 807 out:
 808         if (tmp_oa)
 809                 OBDO_FREE(tmp_oa);
 810         RETURN(rc);
 811
 812 }
 813
 814 static int brw_done(struct lov_request_set *set)
 815 {
 816         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 817         struct lov_oinfo     *loi = NULL;
 818         cfs_list_t *pos;
 819         struct lov_request *req;
 820         ENTRY;
 821
 822         cfs_list_for_each (pos, &set->set_list) {
 823                 req = cfs_list_entry(pos, struct lov_request, rq_link);
 824
 825                 if (!req->rq_complete || req->rq_rc)
 826                         continue;
 827
 828                 loi = lsm->lsm_oinfo[req->rq_stripe];
 829
 830                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS)
 831                         loi->loi_lvb.lvb_blocks = req->rq_oi.oi_oa->o_blocks;
 832         }
 833
 834         RETURN(0);
 835 }
 836
 837 int lov_fini_brw_set(struct lov_request_set *set)
 838 {
 839         int rc = 0;
 840         ENTRY;
 841
 842         if (set == NULL)
 843                 RETURN(0);
 844         LASSERT(set->set_exp);
 845         if (set->set_completes) {
 846                 rc = brw_done(set);
 847                 /* FIXME update qos data here */
 848         }
 849         lov_put_reqset(set);
 850
 851         RETURN(rc);
 852 }
 853
 854 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
 855                      obd_count oa_bufs, struct brw_page *pga,
 856                      struct obd_trans_info *oti,
 857                      struct lov_request_set **reqset)
 858 {
 859         struct {
 860                 obd_count       index;
 861                 obd_count       count;
 862                 obd_count       off;
 863         } *info = NULL;
 864         struct lov_request_set *set;
 865         struct lov_obd *lov = &exp->exp_obd->u.lov;
 866         int rc = 0, i, shift;
 867         ENTRY;
 868
 869         OBD_ALLOC(set, sizeof(*set));
 870         if (set == NULL)
 871                 RETURN(-ENOMEM);
 872         lov_init_set(set);
 873
 874         set->set_exp = exp;
 875         set->set_oti = oti;
 876         set->set_oi = oinfo;
 877         set->set_oabufs = oa_bufs;
 878         OBD_ALLOC(set->set_pga, oa_bufs * sizeof(*set->set_pga));
 879         if (!set->set_pga)
 880                 GOTO(out, rc = -ENOMEM);
 881
 882         OBD_ALLOC(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 883         if (!info)
 884                 GOTO(out, rc = -ENOMEM);
 885
 886         /* calculate the page count for each stripe */
 887         for (i = 0; i < oa_bufs; i++) {
 888                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 889                 info[stripe].count++;
 890         }
 891
 892         /* alloc and initialize lov request */
 893         shift = 0;
 894         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++){
 895                 struct lov_oinfo *loi = NULL;
 896                 struct lov_request *req;
 897
 898                 if (info[i].count == 0)
 899                         continue;
 900
 901                 loi = oinfo->oi_md->lsm_oinfo[i];
 902                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 903                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 904                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 905                         GOTO(out, rc = -EIO);
 906                 }
 907
 908                 OBD_ALLOC(req, sizeof(*req));
 909                 if (req == NULL)
 910                         GOTO(out, rc = -ENOMEM);
 911
 912                 OBDO_ALLOC(req->rq_oi.oi_oa);
 913                 if (req->rq_oi.oi_oa == NULL) {
 914                         OBD_FREE(req, sizeof(*req));
 915                         GOTO(out, rc = -ENOMEM);
 916                 }
 917
 918                 if (oinfo->oi_oa) {
 919                         memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
 920                                sizeof(*req->rq_oi.oi_oa));
 921                 }
 922                 req->rq_oi.oi_oa->o_id = loi->loi_id;
 923                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
 924                 req->rq_oi.oi_oa->o_stripe_idx = i;
 925
 926                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 927                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 928                 if (req->rq_oi.oi_md == NULL) {
 929                         OBDO_FREE(req->rq_oi.oi_oa);
 930                         OBD_FREE(req, sizeof(*req));
 931                         GOTO(out, rc = -ENOMEM);
 932                 }
 933
 934                 req->rq_idx = loi->loi_ost_idx;
 935                 req->rq_stripe = i;
 936
 937                 /* XXX LOV STACKING */
 938                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 939                 req->rq_oi.oi_md->lsm_object_seq = loi->loi_seq;
 940                 req->rq_oabufs = info[i].count;
 941                 req->rq_pgaidx = shift;
 942                 shift += req->rq_oabufs;
 943
 944                 /* remember the index for sort brw_page array */
 945                 info[i].index = req->rq_pgaidx;
 946
 947                 req->rq_oi.oi_capa = oinfo->oi_capa;
 948
 949                 lov_set_add_req(req, set);
 950         }
 951         if (!set->set_count)
 952                 GOTO(out, rc = -EIO);
 953
 954         /* rotate & sort the brw_page array */
 955         for (i = 0; i < oa_bufs; i++) {
 956                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 957
 958                 shift = info[stripe].index + info[stripe].off;
 959                 LASSERT(shift < oa_bufs);
 960                 set->set_pga[shift] = pga[i];
 961                 lov_stripe_offset(oinfo->oi_md, pga[i].off, stripe,
 962                                   &set->set_pga[shift].off);
 963                 info[stripe].off++;
 964         }
 965 out:
 966         if (info)
 967                 OBD_FREE(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 968
 969         if (rc == 0)
 970                 *reqset = set;
 971         else
 972                 lov_fini_brw_set(set);
 973
 974         RETURN(rc);
 975 }
 976
 977 int lov_fini_getattr_set(struct lov_request_set *set)
 978 {
 979         int rc = 0;
 980         ENTRY;
 981
 982         if (set == NULL)
 983                 RETURN(0);
 984         LASSERT(set->set_exp);
 985         if (set->set_completes)
 986                 rc = common_attr_done(set);
 987
 988         lov_put_reqset(set);
 989
 990         RETURN(rc);
 991 }
 992
 993 /* The callback for osc_getattr_async that finilizes a request info when a
 994  * response is received. */
 995 static int cb_getattr_update(void *cookie, int rc)
 996 {
 997         struct obd_info *oinfo = cookie;
 998         struct lov_request *lovreq;
 999         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1000         return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
1001 }
1002
1003 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
1004                          struct lov_request_set **reqset)
1005 {
1006         struct lov_request_set *set;
1007         struct lov_obd *lov = &exp->exp_obd->u.lov;
1008         int rc = 0, i;
1009         ENTRY;
1010
1011         OBD_ALLOC(set, sizeof(*set));
1012         if (set == NULL)
1013                 RETURN(-ENOMEM);
1014         lov_init_set(set);
1015
1016         set->set_exp = exp;
1017         set->set_oi = oinfo;
1018
1019         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1020                 struct lov_oinfo *loi;
1021                 struct lov_request *req;
1022
1023                 loi = oinfo->oi_md->lsm_oinfo[i];
1024                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1025                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1026                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1027                         if (oinfo->oi_oa->o_valid & OBD_MD_FLEPOCH)
1028                                 /* SOM requires all the OSTs to be active. */
1029                                 GOTO(out_set, rc = -EIO);
1030                         continue;
1031                 }
1032
1033                 OBD_ALLOC(req, sizeof(*req));
1034                 if (req == NULL)
1035                         GOTO(out_set, rc = -ENOMEM);
1036
1037                 req->rq_stripe = i;
1038                 req->rq_idx = loi->loi_ost_idx;
1039
1040                 OBDO_ALLOC(req->rq_oi.oi_oa);
1041                 if (req->rq_oi.oi_oa == NULL) {
1042                         OBD_FREE(req, sizeof(*req));
1043                         GOTO(out_set, rc = -ENOMEM);
1044                 }
1045                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1046                        sizeof(*req->rq_oi.oi_oa));
1047                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1048                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1049                 req->rq_oi.oi_cb_up = cb_getattr_update;
1050                 req->rq_oi.oi_capa = oinfo->oi_capa;
1051
1052                 lov_set_add_req(req, set);
1053         }
1054         if (!set->set_count)
1055                 GOTO(out_set, rc = -EIO);
1056         *reqset = set;
1057         RETURN(rc);
1058 out_set:
1059         lov_fini_getattr_set(set);
1060         RETURN(rc);
1061 }
1062
1063 int lov_fini_destroy_set(struct lov_request_set *set)
1064 {
1065         ENTRY;
1066
1067         if (set == NULL)
1068                 RETURN(0);
1069         LASSERT(set->set_exp);
1070         if (set->set_completes) {
1071                 /* FIXME update qos data here */
1072         }
1073
1074         lov_put_reqset(set);
1075
1076         RETURN(0);
1077 }
1078
1079 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
1080                          struct obdo *src_oa, struct lov_stripe_md *lsm,
1081                          struct obd_trans_info *oti,
1082                          struct lov_request_set **reqset)
1083 {
1084         struct lov_request_set *set;
1085         struct lov_obd *lov = &exp->exp_obd->u.lov;
1086         int rc = 0, i;
1087         ENTRY;
1088
1089         OBD_ALLOC(set, sizeof(*set));
1090         if (set == NULL)
1091                 RETURN(-ENOMEM);
1092         lov_init_set(set);
1093
1094         set->set_exp = exp;
1095         set->set_oi = oinfo;
1096         set->set_oi->oi_md = lsm;
1097         set->set_oi->oi_oa = src_oa;
1098         set->set_oti = oti;
1099         if (oti != NULL && src_oa->o_valid & OBD_MD_FLCOOKIE)
1100                 set->set_cookies = oti->oti_logcookies;
1101
1102         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1103                 struct lov_oinfo *loi;
1104                 struct lov_request *req;
1105
1106                 loi = lsm->lsm_oinfo[i];
1107                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1108                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1109                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1110                         continue;
1111                 }
1112
1113                 OBD_ALLOC(req, sizeof(*req));
1114                 if (req == NULL)
1115                         GOTO(out_set, rc = -ENOMEM);
1116
1117                 req->rq_stripe = i;
1118                 req->rq_idx = loi->loi_ost_idx;
1119
1120                 OBDO_ALLOC(req->rq_oi.oi_oa);
1121                 if (req->rq_oi.oi_oa == NULL) {
1122                         OBD_FREE(req, sizeof(*req));
1123                         GOTO(out_set, rc = -ENOMEM);
1124                 }
1125                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1126                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1127                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1128                 lov_set_add_req(req, set);
1129         }
1130         if (!set->set_count)
1131                 GOTO(out_set, rc = -EIO);
1132         *reqset = set;
1133         RETURN(rc);
1134 out_set:
1135         lov_fini_destroy_set(set);
1136         RETURN(rc);
1137 }
1138
1139 int lov_fini_setattr_set(struct lov_request_set *set)
1140 {
1141         int rc = 0;
1142         ENTRY;
1143
1144         if (set == NULL)
1145                 RETURN(0);
1146         LASSERT(set->set_exp);
1147         if (set->set_completes) {
1148                 rc = common_attr_done(set);
1149                 /* FIXME update qos data here */
1150         }
1151
1152         lov_put_reqset(set);
1153         RETURN(rc);
1154 }
1155
1156 int lov_update_setattr_set(struct lov_request_set *set,
1157                            struct lov_request *req, int rc)
1158 {
1159         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1160         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1161         ENTRY;
1162
1163         lov_update_set(set, req, rc);
1164
1165         /* grace error on inactive ost */
1166         if (rc && !(lov->lov_tgts[req->rq_idx] &&
1167                     lov->lov_tgts[req->rq_idx]->ltd_active))
1168                 rc = 0;
1169
1170         if (rc == 0) {
1171                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCTIME)
1172                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_ctime =
1173                                 req->rq_oi.oi_oa->o_ctime;
1174                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLMTIME)
1175                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_mtime =
1176                                 req->rq_oi.oi_oa->o_mtime;
1177                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLATIME)
1178                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_atime =
1179                                 req->rq_oi.oi_oa->o_atime;
1180         }
1181
1182         RETURN(rc);
1183 }
1184
1185 /* The callback for osc_setattr_async that finilizes a request info when a
1186  * response is received. */
1187 static int cb_setattr_update(void *cookie, int rc)
1188 {
1189         struct obd_info *oinfo = cookie;
1190         struct lov_request *lovreq;
1191         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1192         return lov_update_setattr_set(lovreq->rq_rqset, lovreq, rc);
1193 }
1194
1195 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
1196                          struct obd_trans_info *oti,
1197                          struct lov_request_set **reqset)
1198 {
1199         struct lov_request_set *set;
1200         struct lov_obd *lov = &exp->exp_obd->u.lov;
1201         int rc = 0, i;
1202         ENTRY;
1203
1204         OBD_ALLOC(set, sizeof(*set));
1205         if (set == NULL)
1206                 RETURN(-ENOMEM);
1207         lov_init_set(set);
1208
1209         set->set_exp = exp;
1210         set->set_oti = oti;
1211         set->set_oi = oinfo;
1212         if (oti != NULL && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
1213                 set->set_cookies = oti->oti_logcookies;
1214
1215         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1216                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1217                 struct lov_request *req;
1218
1219                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1220                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1221                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1222                         continue;
1223                 }
1224
1225                 OBD_ALLOC(req, sizeof(*req));
1226                 if (req == NULL)
1227                         GOTO(out_set, rc = -ENOMEM);
1228                 req->rq_stripe = i;
1229                 req->rq_idx = loi->loi_ost_idx;
1230
1231                 OBDO_ALLOC(req->rq_oi.oi_oa);
1232                 if (req->rq_oi.oi_oa == NULL) {
1233                         OBD_FREE(req, sizeof(*req));
1234                         GOTO(out_set, rc = -ENOMEM);
1235                 }
1236                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1237                        sizeof(*req->rq_oi.oi_oa));
1238                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1239                 req->rq_oi.oi_oa->o_seq= loi->loi_seq;
1240                 req->rq_oi.oi_oa->o_stripe_idx = i;
1241                 req->rq_oi.oi_cb_up = cb_setattr_update;
1242                 req->rq_oi.oi_capa = oinfo->oi_capa;
1243
1244                 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE) {
1245                         int off = lov_stripe_offset(oinfo->oi_md,
1246                                                     oinfo->oi_oa->o_size, i,
1247                                                     &req->rq_oi.oi_oa->o_size);
1248
1249                         if (off < 0 && req->rq_oi.oi_oa->o_size)
1250                                 req->rq_oi.oi_oa->o_size--;
1251
1252                         CDEBUG(D_INODE, "stripe %d has size "LPU64"/"LPU64"\n",
1253                                i, req->rq_oi.oi_oa->o_size,
1254                                oinfo->oi_oa->o_size);
1255                 }
1256                 lov_set_add_req(req, set);
1257         }
1258         if (!set->set_count)
1259                 GOTO(out_set, rc = -EIO);
1260         *reqset = set;
1261         RETURN(rc);
1262 out_set:
1263         lov_fini_setattr_set(set);
1264         RETURN(rc);
1265 }
1266
1267 int lov_fini_punch_set(struct lov_request_set *set)
1268 {
1269         int rc = 0;
1270         ENTRY;
1271
1272         if (set == NULL)
1273                 RETURN(0);
1274         LASSERT(set->set_exp);
1275         if (set->set_completes) {
1276                 rc = -EIO;
1277                 /* FIXME update qos data here */
1278                 if (set->set_success)
1279                         rc = common_attr_done(set);
1280         }
1281
1282         lov_put_reqset(set);
1283
1284         RETURN(rc);
1285 }
1286
1287 int lov_update_punch_set(struct lov_request_set *set,
1288                          struct lov_request *req, int rc)
1289 {
1290         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1291         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1292         ENTRY;
1293
1294         lov_update_set(set, req, rc);
1295
1296         /* grace error on inactive ost */
1297         if (rc && !lov->lov_tgts[req->rq_idx]->ltd_active)
1298                 rc = 0;
1299
1300         if (rc == 0) {
1301                 lov_stripe_lock(lsm);
1302                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS) {
1303                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_blocks =
1304                                 req->rq_oi.oi_oa->o_blocks;
1305                 }
1306
1307                 /* Do we need to update lvb_size here? It needn't because
1308                  * it have been done in ll_truncate(). -jay */
1309                 lov_stripe_unlock(lsm);
1310         }
1311
1312         RETURN(rc);
1313 }
1314
1315 /* The callback for osc_punch that finilizes a request info when a response
1316  * is received. */
1317 static int cb_update_punch(void *cookie, int rc)
1318 {
1319         struct obd_info *oinfo = cookie;
1320         struct lov_request *lovreq;
1321         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1322         return lov_update_punch_set(lovreq->rq_rqset, lovreq, rc);
1323 }
1324
1325 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
1326                        struct obd_trans_info *oti,
1327                        struct lov_request_set **reqset)
1328 {
1329         struct lov_request_set *set;
1330         struct lov_obd *lov = &exp->exp_obd->u.lov;
1331         int rc = 0, i;
1332         ENTRY;
1333
1334         OBD_ALLOC(set, sizeof(*set));
1335         if (set == NULL)
1336                 RETURN(-ENOMEM);
1337         lov_init_set(set);
1338
1339         set->set_oi = oinfo;
1340         set->set_exp = exp;
1341
1342         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1343                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1344                 struct lov_request *req;
1345                 obd_off rs, re;
1346
1347                 if (!lov_stripe_intersects(oinfo->oi_md, i,
1348                                            oinfo->oi_policy.l_extent.start,
1349                                            oinfo->oi_policy.l_extent.end,
1350                                            &rs, &re))
1351                         continue;
1352
1353                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1354                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1355                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1356                         GOTO(out_set, rc = -EIO);
1357                 }
1358
1359                 OBD_ALLOC(req, sizeof(*req));
1360                 if (req == NULL)
1361                         GOTO(out_set, rc = -ENOMEM);
1362                 req->rq_stripe = i;
1363                 req->rq_idx = loi->loi_ost_idx;
1364
1365                 OBDO_ALLOC(req->rq_oi.oi_oa);
1366                 if (req->rq_oi.oi_oa == NULL) {
1367                         OBD_FREE(req, sizeof(*req));
1368                         GOTO(out_set, rc = -ENOMEM);
1369                 }
1370                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1371                        sizeof(*req->rq_oi.oi_oa));
1372                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1373                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1374                 req->rq_oi.oi_oa->o_valid |= OBD_MD_FLGROUP;
1375
1376                 req->rq_oi.oi_oa->o_stripe_idx = i;
1377                 req->rq_oi.oi_cb_up = cb_update_punch;
1378
1379                 req->rq_oi.oi_policy.l_extent.start = rs;
1380                 req->rq_oi.oi_policy.l_extent.end = re;
1381                 req->rq_oi.oi_policy.l_extent.gid = -1;
1382
1383                 req->rq_oi.oi_capa = oinfo->oi_capa;
1384
1385                 lov_set_add_req(req, set);
1386         }
1387         if (!set->set_count)
1388                 GOTO(out_set, rc = -EIO);
1389         *reqset = set;
1390         RETURN(rc);
1391 out_set:
1392         lov_fini_punch_set(set);
1393         RETURN(rc);
1394 }
1395
1396 int lov_fini_sync_set(struct lov_request_set *set)
1397 {
1398         int rc = 0;
1399         ENTRY;
1400
1401         if (set == NULL)
1402                 RETURN(0);
1403         LASSERT(set->set_exp);
1404         if (set->set_completes) {
1405                 if (!set->set_success)
1406                         rc = -EIO;
1407                 /* FIXME update qos data here */
1408         }
1409
1410         lov_put_reqset(set);
1411
1412         RETURN(rc);
1413 }
1414
1415 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *oinfo,
1416                       struct obdo *src_oa, struct lov_stripe_md *lsm,
1417                       obd_off start, obd_off end,
1418                       struct lov_request_set **reqset)
1419 {
1420         struct lov_request_set *set;
1421         struct lov_obd *lov = &exp->exp_obd->u.lov;
1422         int rc = 0, i;
1423         ENTRY;
1424
1425         OBD_ALLOC(set, sizeof(*set));
1426         if (set == NULL)
1427                 RETURN(-ENOMEM);
1428         lov_init_set(set);
1429
1430         set->set_exp = exp;
1431         set->set_oi = oinfo;
1432         set->set_oi->oi_md = lsm;
1433         set->set_oi->oi_oa = src_oa;
1434
1435         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1436                 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
1437                 struct lov_request *req;
1438                 obd_off rs, re;
1439
1440                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1441                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1442                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1443                         continue;
1444                 }
1445
1446                 if (!lov_stripe_intersects(lsm, i, start, end, &rs, &re))
1447                         continue;
1448
1449                 OBD_ALLOC(req, sizeof(*req));
1450                 if (req == NULL)
1451                         GOTO(out_set, rc = -ENOMEM);
1452                 req->rq_stripe = i;
1453                 req->rq_idx = loi->loi_ost_idx;
1454
1455                 OBDO_ALLOC(req->rq_oi.oi_oa);
1456                 if (req->rq_oi.oi_oa == NULL) {
1457                         OBD_FREE(req, sizeof(*req));
1458                         GOTO(out_set, rc = -ENOMEM);
1459                 }
1460                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1461                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1462                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1463                 req->rq_oi.oi_oa->o_stripe_idx = i;
1464
1465                 req->rq_oi.oi_policy.l_extent.start = rs;
1466                 req->rq_oi.oi_policy.l_extent.end = re;
1467                 req->rq_oi.oi_policy.l_extent.gid = -1;
1468
1469                 lov_set_add_req(req, set);
1470         }
1471         if (!set->set_count)
1472                 GOTO(out_set, rc = -EIO);
1473         *reqset = set;
1474         RETURN(rc);
1475 out_set:
1476         lov_fini_sync_set(set);
1477         RETURN(rc);
1478 }
1479
1480 #define LOV_U64_MAX ((__u64)~0ULL)
1481 #define LOV_SUM_MAX(tot, add)                                           \
1482         do {                                                            \
1483                 if ((tot) + (add) < (tot))                              \
1484                         (tot) = LOV_U64_MAX;                            \
1485                 else                                                    \
1486                         (tot) += (add);                                 \
1487         } while(0)
1488
1489 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,int success)
1490 {
1491         ENTRY;
1492
1493         if (success) {
1494                 __u32 expected_stripes = lov_get_stripecnt(&obd->u.lov, 0);
1495
1496                 if (osfs->os_files != LOV_U64_MAX)
1497                         do_div(osfs->os_files, expected_stripes);
1498                 if (osfs->os_ffree != LOV_U64_MAX)
1499                         do_div(osfs->os_ffree, expected_stripes);
1500
1501                 cfs_spin_lock(&obd->obd_osfs_lock);
1502                 memcpy(&obd->obd_osfs, osfs, sizeof(*osfs));
1503                 obd->obd_osfs_age = cfs_time_current_64();
1504                 cfs_spin_unlock(&obd->obd_osfs_lock);
1505                 RETURN(0);
1506         }
1507
1508         RETURN(-EIO);
1509 }
1510
1511 int lov_fini_statfs_set(struct lov_request_set *set)
1512 {
1513         int rc = 0;
1514         ENTRY;
1515
1516         if (set == NULL)
1517                 RETURN(0);
1518
1519         if (set->set_completes) {
1520                 rc = lov_fini_statfs(set->set_obd, set->set_oi->oi_osfs,
1521                                      set->set_success);
1522         }
1523         lov_put_reqset(set);
1524         RETURN(rc);
1525 }
1526
1527 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
1528                        int success)
1529 {
1530         int shift = 0, quit = 0;
1531         __u64 tmp;
1532
1533         if (success == 0) {
1534                 memcpy(osfs, lov_sfs, sizeof(*lov_sfs));
1535         } else {
1536                 if (osfs->os_bsize != lov_sfs->os_bsize) {
1537                         /* assume all block sizes are always powers of 2 */
1538                         /* get the bits difference */
1539                         tmp = osfs->os_bsize | lov_sfs->os_bsize;
1540                         for (shift = 0; shift <= 64; ++shift) {
1541                                 if (tmp & 1) {
1542                                         if (quit)
1543                                                 break;
1544                                         else
1545                                                 quit = 1;
1546                                         shift = 0;
1547                                 }
1548                                 tmp >>= 1;
1549                         }
1550                 }
1551
1552                 if (osfs->os_bsize < lov_sfs->os_bsize) {
1553                         osfs->os_bsize = lov_sfs->os_bsize;
1554
1555                         osfs->os_bfree  >>= shift;
1556                         osfs->os_bavail >>= shift;
1557                         osfs->os_blocks >>= shift;
1558                 } else if (shift != 0) {
1559                         lov_sfs->os_bfree  >>= shift;
1560                         lov_sfs->os_bavail >>= shift;
1561                         lov_sfs->os_blocks >>= shift;
1562                 }
1563 #ifdef MIN_DF
1564                 /* Sandia requested that df (and so, statfs) only
1565                    returned minimal available space on
1566                    a single OST, so people would be able to
1567                    write this much data guaranteed. */
1568                 if (osfs->os_bavail > lov_sfs->os_bavail) {
1569                         /* Presumably if new bavail is smaller,
1570                            new bfree is bigger as well */
1571                         osfs->os_bfree = lov_sfs->os_bfree;
1572                         osfs->os_bavail = lov_sfs->os_bavail;
1573                 }
1574 #else
1575                 osfs->os_bfree += lov_sfs->os_bfree;
1576                 osfs->os_bavail += lov_sfs->os_bavail;
1577 #endif
1578                 osfs->os_blocks += lov_sfs->os_blocks;
1579                 /* XXX not sure about this one - depends on policy.
1580                  *   - could be minimum if we always stripe on all OBDs
1581                  *     (but that would be wrong for any other policy,
1582                  *     if one of the OBDs has no more objects left)
1583                  *   - could be sum if we stripe whole objects
1584                  *   - could be average, just to give a nice number
1585                  *
1586                  * To give a "reasonable" (if not wholly accurate)
1587                  * number, we divide the total number of free objects
1588                  * by expected stripe count (watch out for overflow).
1589                  */
1590                 LOV_SUM_MAX(osfs->os_files, lov_sfs->os_files);
1591                 LOV_SUM_MAX(osfs->os_ffree, lov_sfs->os_ffree);
1592         }
1593 }
1594
1595 /* The callback for osc_statfs_async that finilizes a request info when a
1596  * response is received. */
1597 static int cb_statfs_update(void *cookie, int rc)
1598 {
1599         struct obd_info *oinfo = cookie;
1600         struct lov_request *lovreq;
1601         struct obd_statfs *osfs, *lov_sfs;
1602         struct lov_obd *lov;
1603         struct lov_tgt_desc *tgt;
1604         struct obd_device *lovobd, *tgtobd;
1605         int success;
1606         ENTRY;
1607
1608         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1609         lovobd = lovreq->rq_rqset->set_obd;
1610         lov = &lovobd->u.lov;
1611         osfs = lovreq->rq_rqset->set_oi->oi_osfs;
1612         lov_sfs = oinfo->oi_osfs;
1613         success = lovreq->rq_rqset->set_success;
1614         /* XXX: the same is done in lov_update_common_set, however
1615            lovset->set_exp is not initialized. */
1616         lov_update_set(lovreq->rq_rqset, lovreq, rc);
1617         if (rc)
1618                 GOTO(out, rc);
1619
1620         obd_getref(lovobd);
1621         tgt = lov->lov_tgts[lovreq->rq_idx];
1622         if (!tgt || !tgt->ltd_active)
1623                 GOTO(out_update, rc);
1624
1625         tgtobd = class_exp2obd(tgt->ltd_exp);
1626         cfs_spin_lock(&tgtobd->obd_osfs_lock);
1627         memcpy(&tgtobd->obd_osfs, lov_sfs, sizeof(*lov_sfs));
1628         if ((oinfo->oi_flags & OBD_STATFS_FROM_CACHE) == 0)
1629                 tgtobd->obd_osfs_age = cfs_time_current_64();
1630         cfs_spin_unlock(&tgtobd->obd_osfs_lock);
1631
1632 out_update:
1633         lov_update_statfs(osfs, lov_sfs, success);
1634         qos_update(lov);
1635         obd_putref(lovobd);
1636
1637 out:
1638         if (lovreq->rq_rqset->set_oi->oi_flags & OBD_STATFS_PTLRPCD &&
1639             lov_finished_set(lovreq->rq_rqset)) {
1640                lov_statfs_interpret(NULL, lovreq->rq_rqset,
1641                                     lovreq->rq_rqset->set_success !=
1642                                                   lovreq->rq_rqset->set_count);
1643                qos_statfs_done(lov);
1644         }
1645
1646         RETURN(0);
1647 }
1648
1649 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
1650                         struct lov_request_set **reqset)
1651 {
1652         struct lov_request_set *set;
1653         struct lov_obd *lov = &obd->u.lov;
1654         int rc = 0, i;
1655         ENTRY;
1656
1657         OBD_ALLOC(set, sizeof(*set));
1658         if (set == NULL)
1659                 RETURN(-ENOMEM);
1660         lov_init_set(set);
1661
1662         set->set_obd = obd;
1663         set->set_oi = oinfo;
1664
1665         /* We only get block data from the OBD */
1666         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
1667                 struct lov_request *req;
1668
1669                 if (!lov->lov_tgts[i] || (!lov->lov_tgts[i]->ltd_active
1670                                           && (oinfo->oi_flags & OBD_STATFS_NODELAY))) {
1671                         CDEBUG(D_HA, "lov idx %d inactive\n", i);
1672                         continue;
1673                 }
1674
1675                 /* skip targets that have been explicitely disabled by the
1676                  * administrator */
1677                 if (!lov->lov_tgts[i]->ltd_exp) {
1678                         CDEBUG(D_HA, "lov idx %d administratively disabled\n", i);
1679                         continue;
1680                 }
1681
1682                 OBD_ALLOC(req, sizeof(*req));
1683                 if (req == NULL)
1684                         GOTO(out_set, rc = -ENOMEM);
1685
1686                 OBD_ALLOC(req->rq_oi.oi_osfs, sizeof(*req->rq_oi.oi_osfs));
1687                 if (req->rq_oi.oi_osfs == NULL) {
1688                         OBD_FREE(req, sizeof(*req));
1689                         GOTO(out_set, rc = -ENOMEM);
1690                 }
1691
1692                 req->rq_idx = i;
1693                 req->rq_oi.oi_cb_up = cb_statfs_update;
1694                 req->rq_oi.oi_flags = oinfo->oi_flags;
1695
1696                 lov_set_add_req(req, set);
1697         }
1698         if (!set->set_count)
1699                 GOTO(out_set, rc = -EIO);
1700         *reqset = set;
1701         RETURN(rc);
1702 out_set:
1703         lov_fini_statfs_set(set);
1704         RETURN(rc);
1705 }